DESCRIPTION This DTC is stored if the headlight ECU sub-assembly LH for another destination is installed.
CAUTION / NOTICE / HINT NOTICE:
PROCEDURE
(a) Connect the Techstream to the DLC3. (b) Turn the power switch on (IG). (c) Turn the Techstream on. (d) Enter the following menus: Body Electrical / HL AutoLeveling / Trouble Codes. (e) Clear the DTCs. Body Electrical > HL AutoLeveling > Clear DTCs
(a) Connect the Techstream to the DLC3. (b) Turn the power switch on (IG). (c) Turn the Techstream on. (d) Enter the following menus: Body Electrical / HL AutoLeveling / Trouble Codes. (e) Check for DTCs. Body Electrical > HL AutoLeveling > Trouble CodesOK: DTC B2456 is not output.
(a) Check if the part number of the hybrid vehicle control ECU installed to the vehicle is correct. OK: Part number is correct.
(a) Check if the part number of the main body ECU (multiplex network body ECU) installed to the vehicle is correct. OK: Part number is correct.
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Toyota Avalon (XX50) 2019-2022 Service & Repair Manual > Vacuum Warning Switch(for Gasoline Model): On-vehicle Inspection
ON-VEHICLE INSPECTION PROCEDURE 1. INSPECT BRAKE FLUID LEVEL IN RESERVOIR Click here 2. INSPECT BRAKE BOOSTER ASSEMBLY Click here 3. INSPECT VACUUM WARNING SWITCH ASSEMBLY (a) Start the engine and stop it after 1 or 2 minutes. (b) Remove the battery. Click here (c) Disconnect the connector from the ...